Effect of Concrete Age and Creep on the Behavior of Concrete-Filled Steel Tube Columns

Table 8

Parameters of column needed in calculation.

(mm)	(mm)	(mm)	(MPa)	(MPa)	(day)	TL (day)
1000	12~36	4000	345	40.7	7	50	2.12

TL is the time of the load duration; is the ultimate creep coefficient of concrete according to Terry et al. [8].